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srb93 srb93 is offline
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Car: C43 AMG
Icon1 No AFR readings in C43 logs - 11-02-2020, 02:29 PM

Hi Guys,
I recently installed the JB4 on my 2016 C43 and have done some runs on Maps0, Map1 and Map2 (logs attached). I do not seem to be getting AFR readings in the logs. These logs were on Firmware version 7. I updated to the Firmware version 8 and did a random log on the daily drive (not full throttle) to check for AFR, but still no AFR reading.

Are the logs ok and is the AFR not logged for the C43? Is there any settings that I need to update to get the AFR readings? Any help is highly appreciated

P23_M0_R1_201024_062807_map0.csv

P23_M1_R1_201024_070407_map1.1.csv

P23_M2_R1_201024_064843_map2.3.csv

P23_M2_R1_201031_222502_firmware_v8.csv
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Default 11-02-2020, 02:31 PM

There is a bug with some of the older models where AFR doesn't appear in the log. Fortunately fuel trims and all other parameters appear to work normally. As long as fuel trims are in check AFR will be as mapped.


Burger Motorsports
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srb93 srb93 is offline
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Default 11-02-2020, 02:40 PM

Ah ok, thanks for confirming. Based on my logs, would you recommend trying Map3? These runs are on australian 98 RON pump fuel.
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Default 11-02-2020, 04:56 PM

You can try a run on map3 for comparison but I noticed one timing drop on map2 so I suspect you'll find map2 performing best for the fuel/conditions.


Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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